Machine for shearing metal bars



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MACHINE FIOR SHEARNG METAL BARS Filed Jun 26, 1925 6 Sheets-Sheet NLarch 8, 1927. 1,620,354

E.l P. JONES ET AL MACHINE FOR SHEARING METAL BARS Filed June 26 1925 5 Sheets5heet 2 Q y mvENToRs.

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E. P. JONES ETvAL MACISXINE FOR SHEARING METAL BARS Filed June 26, 1925 6 Sheetgfshet s m ummm L *En "'Q I n M fh 1 A c @i i E un@ I ...g-1D jq-g NQ l Fm E 2# @l O. m @5 L .i t A EK f 2 Z I l' u 2: Q 2 @l o I F121 k` in i "z g5 g mvENToRs.

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March 8, 1927.

V E. P. JONES ET A1.

MACHINE FOR SHEARING METAL BARS 1925 Xe sheets-sheet 4 F led une 26 E. P. JONES ET AL MACHINE FOR SHEARING METAL`BARS March 8, 1927.

INVENTORS.

Filed June 26, 1925' s sheets-Sheet 5 March 8, 1927. 1,620,354

E. P. JONES ET AL MAGHIN FOR SHEARING METAL BARS Filed June 26, 1925 5 5heets .sheet 6 Patented Mar. 8, 1927.

EDWARD PETER JONES, OF

ELLESMERE PORT, Ann ARTHUR" HENRYJACKS'NLoF MANCHESTER, ENGLAND.

MACHINE" Fon'snnannte Marat sans:

Application mea June 26,1925, serial-'No 39,82;and ineeatisritain se'fpmbrla' 19`241- This invention relates to' multiple-head shearing machines such as used in sheet and tinplate Worksfor dividing` a plateI transe versely into several sheetshaving `a series of blades fixed to a bed and a corresponding` number ot blades carried by areciprocating slide'.

In such machines' as.` hitherto constructed the several cuts ottheplate or bar Were made'simultaneously at each strolejo't the machine.

According" toj this invention` a' multiple shearing machineis provided into Which'a long bar may be fed sideways With the cutting` blades 'so set in' stepped relation to one another as to actin succession and cu'tithe bar intO a numberof shrtller'gtlis insuccession ata single stroke of the machine,

The machine comprises a plurality 'of feutting` or shearing' heads With'up'per and lower blades disposed 'transversely 'to'4 its longitudinalvaxis andl With the upper blades set at different levels or vin stepped Arelation to one another to cutfa long bar into a number of shor't'lengths oneata time, one set of cuttingybladesA being carried on-a reciprocating' l cross-head the shearing heads 'being either permanently set to cut alllbars 'to one length or mounted on slides so that they can be adjusted Vas required to cut' bars to any desired length afrackorscrewv and diiieren'- tial gea-ring being provided to vmoye and adjust the shearing'x heads te the desired'iposition. y

The invention will be fully described With reference to the accompanying` drawings.

Fig. l is a front elevation of lmultiple-bar shearing machine (with front f plate removed) of the form in Whi'c'hthe shearing heads are permanently set to cutone length of bar.

Figz2 is a plan of cross head for carrying` topv shear blocks. l

Fig. 3 is a transverse sectional `elevati'on osame. l v

Fig. ,4 isa front elevation of multiple bar shearingl `machine With 1adjustablel shearing heads adapted to cut variuslengths of bar. Fig. 5 is an end elevation ot same' viewed from lett 'endot machine.

Fig. 6`is a transversesectional elevation of same viewed vfrein left'iendci' -'machine`.`

7 is an endv elevation par-tlyilrsectibn, viewed from' right end-ot machines* Fig. 8 isalplan1 of bracketcar-ryi'nglthe bottom shearing' blockf Figi' 9 {is a `trontelevation of one'ot the cutting heads A.

Fig? 10' is affront eleifat-ionllo'f the bailanced movable part of the cross-head extension.I

Fig: ll is aplain of samen Fig. 12 is atransverseseetion" throughj the delivery-end 01"' ithe machines Fig; 13 is a-sectionot1 skipU."

lnthe 'formshown iniFfigsx-l yto Bthe machineI is designed lto cu'tonei'length'of Sbar only, the cutting heads AAbe-ing-permanently set or liixed at` a given distance apart y'and -is constructed with two f main' end frames ABl-Bl connected by crees-bed l atthe bottom f and a cross-bar C at theltopi'beth-,securelyzbolted to the end 'trames' 13, Bt, The fend frames are termed Withslides 5151 inwhich alreciprocating'crosslhead orf'sliding member" Fais mounted'- andv adapted to slide' up and down. Tet-he 'cross bed D nulnber'fo shear blades (l are atiixed at right angles to its'longitudinailA` 'axis and t i the reciprocating cress 3head E 'a/corresponding*number*of shear blades e are aiiixed r'ming shear lheads'ffAlWi-th pairs vof shear "bladesl d; e" at right angles'toi the front line of themachinez- The pairs of shear blades are' equal innumber to the number of' short l'lengths ot bar -to be cut andare spaced at the'pioper distanee'e apart -to produce" thellengths' of bars required;

A driving-or 'operating` shaft Ffdrivenfby spur Wheel f is journalled in bearingsin the end '1a1nesB,B and uponE it "aremounted two i eccentrijcs fl connected to the 'reciprocate ingcross head" Efbyllinks Pfand byWhich itis operated.

machine `down which the bars G1* arefe'd si'detvays'into thema'chine between the blades ci, e otfthe shear heads 'A andit'lis'found desirable toinclinethe shear 'blades clgfto thejsame' extent in continuatio'nf ofl thev slo'pe oit the skidv .(say-abut' 30 'from thehorizontal line)l and the reciprocatingcross-head Elis inclined tothe sameextent and inth'e same direction? The bttm'shear blades d fare; all slet at the same level to support a bar resting upon them but the top shear blades e are each set at ahigher level than the one preceding it so that each pair of blades will come into operation in succession and although the bar may cut into say siX short lengths at a single stroke of the machine only one cut takes place at a time.

At one end of the machine a stop H is litt-ed to position the bar upon the bottom blades d before being eut. The end stop H is moved to and fro by a cam 7L on the shaft F through the links and levers 71,1 the lever 4 being held in contact with the cam by a spring. As each bar is slid in between the pairs of shear blades on to the bottom blades d the stop is brought against it to position it, bringing the end the desired distance :troni the last pairs of blades. Any scrap or short length cut off at the other end falls down the chute 71.2. The cut lengths all down the chutes h3 where they can be col.- lected or be carried away on a travelling conveyer such as shown in Figs. 4 and l2.

The machine is fitted with a clutch K operated by a treadle 7c so that it may be run continuously or intermittently and the cross-head E which carries the top shear blades e is counterbalanced by weights W carried on levers La and connected to the crosshead by links and buffer springs w1.

In the form shown in Figs. 4t to 13 the machineis designed to cut any desired length of bar and the cutting heads A with the shear blades d, e are adjustable in position upon the cross-bed D and cross-head E respectively as required to produce different lengths of bars.

The machine is constructed with two main end frames B, B1 connected by cross-bed D at the bottom and cross-bar C at the top both securely bolted to the end frames B, B1. The end frames are formed with inclined slides l), b1 in which a reciprocating crosshead E is mounted and adapted to move up and down and the crosshead is counterbalanced by weights WV carried on levers w and connected to it by links and buffer springs w1.

The cutting heads A each comprise a pair of brackets or saddles, a lower bracket M mounted upon and adapted to slide along a slide m on the cross-bed D and an u per bracket N mounted upon and adapte to slide along a slide n on the cross-head E so that the position of the cutting heads can be adjusted in relation to one another to alter the distance between them according to the length of bars to be eut. The lower sliding bracket M is made with a recess or gap m1 into which a projection al on the upper sliding bracket N fits which retains the shear blades al and e in shearing contact and also ensures that the upper bracket N will move in unison with the lower bracket M. ried by the lower sliding bracket M and the shear blade e is aiiXed to and carried by the upper sliding bracket N, the blades being at right angles to the front line of the machine.

The bottom shear blades Z are all fixed at the same level to support a bar resting flat upon them and the top shear blades c are each set at a higher level than the one preceding it so that each pair of blades will come into operation in succession at each stroke of the machine only one cut taking place at a time. The blades are set at an inclination oitI about 30o to the horizontal to receive a bar irom an inclined ski d (such as G in Fig. 3).

The cutting heads A are moved to and Jfro on the slides and spaced thereon by power. A toothed rack O is fitted to the cross-bed D and each o1 the lower brackets or saddles M carries a pinion m2 which gears with the rack and is driven from a worm L on a longitudinal shaft P through worm wheel p1 and gears p2 and as the upper bracket or saddle N engages with the lower bracket M the two brackets and the shear blades slide together. The shaft P is mounted in front of the machine and may be driven by an electric motor P1 or other source of power.

A stop H is litted at one end of the machine operated by a cam /L and lever k1 to position each bar as it is placed on the bottom blades to be cut, the lever being held in Contact with the cam by a spring.

For readjustment of the cutting heads A for different lengths into which a bar is to be cut it will be evident that as the bars are always brought to the same position by the stop H at one end, if equal spacing ot the pairs of shear blades 0l and c is to lie maintained the cutting head A which furthest from the stop H must travel a greater distance in the same time alongl the bed than the cutting heads which are nearest to the stop. This necessary differential movement is obtained by the use on the lower brackets or saddles M of gearing of diiiierent ratios on each, to drivea each successive pinion m2 on the rack O faster than the one preceding it.

The machine is iitted with a number ot cutting heads A suiiicient to cut the bars into the shortest lengths and greatest nunr ber of pieces required. lVhen longer lengths and fewer number of pieces are required and the cutting heads` are spaced at their wider distances apart some of those furthest from the stop H will not be required for cutting. To accommodate and support the cutting heads A not required for cutting the crossbed D may be extended at D1 and a lixed extension El of the reciprocating cross-head E is provided to receive the top brackets The shear blade d is affixed to and carf lio each bracket engaging with the rack and worm gear and pinions to rotate such wheel to traverse the bracket into desired position.

5. Apparatus for shearing metal bars into a plurality of short lengths constructed with a plurality of shearing cutting heads with upper and lower cutting blades disposed transversely to the longitudinal axis of the machine and the lower cutting blades set -at an inclination to the horizontal in combination with a sloping skid from which to deliver' the bars sideways tothe cutting blades. i

6. Apparatus for shearing metal bars into short lengths constructed with a plurality of shearing cutting heads disposed trans.- versely to the longitudinal axis of the machine, a stationary cross bed upon which all the lower blades are set to the same level and at an inclination of about 30 to the horizontal to receive a long bar across them, a reciprocating cross head sliding in a plane at a corresponding` inclination to the vertical to which the upper cutting blades are aflixed each blade in succession a greater distance from the corresponding lower blade to cut a long bar into a plurality ofshort lengths at successive cuts on a single stroke of the machine.

7. Apparatus for shearing metal bars into short lengths constructed with a plurality of shearing cutting heads the blades of which are disposed transversely to the longitudinal axis of the machine, a stationary cross bed provided with slides, a plurality of sliding brackets mounted thereon, a cutting blade a'liixed to each sliding bracket, a reciprocating cross-head provided with slides, a plurality of sliding brackets mounted thereon, a cutting blade attached to each sliding bracket, the lower cutting blades set at an inclination of about 30o to the' horizontal to receive the bars and the reciprocating cross head sliding in a plane at a corresponding inclination to the vertical, in combination with a sloping skid disposed at right angles to the longitudinal axis of the machine Afrom which to deliver the bars sideways to the cutting blades. l

S. Apparatus for shearing metal bars into short lengt-hs constructed with a fixed crossbed and a reciprocating cross-head, slides on the said cross-bed andl cross-head, a number of brackets mounted upon and adapted to be moved to and fro along the slide on the cross-bed and a number of brackets mounted upon the slide on the cross-head, shear blades fitted transversely .to the sliding brackets and means to traverse the brackets along the slides.

9. Apparatus for shearing metal bars into short lengths constructed with a plurality of cutting or kshearing heads mounted upon a lined cross-bed and` reciprocating cross-head and Vadapted to slide thereon,anvextension ofthe cross bed, anda fixed extension of the cross-head tojhold the brackets ofthe cutting head when out of action, aconnecting pieceiadapted toslide vertically `between the reciprocating cross-head and its fixed extension and means to` traverse the shearing heads as required to position them for cutting the length of bar required.

Y 10. Apparatusufor shearing metal bars into short lengthsl constructed with a plurality of shearing orcutting heads provided with transversely set blades and mounted upon a lixed bed and; reciprocating crosshead each shearing'or cutting head comprising a lower bracketor saddle fitted with a pinion to engage a rack on the cross-bed to f traverse it along the cross-bed, and a worm, worm wheel and gearsto rotate the pinion, and an upper bracket or saddle totraverse the cross-head engaging with the Vlower bracket so that the two will traverse in unison. v

l `11. Apparatus for shearing metal bars into short lengths constructed with a plurality of shearing cutting heads the blades of which are disposed transversely to the longitudinal axis of the machine, a stationary cross bed provided with slides, a plurality of sliding brackets mountedthereon, a cutting blade aiixed to each sliding bracket, a reciprocating vcross-head provided with slides, a

plurality of sliding brackets mountedV thereon, a cutting blade attachedto each sliding bracket, means tov connect each pair of upper rand lower slidingbrackets` and means to traverse them in unison, chutes to direct the rut bars from the shearing blades, a travelling conveyor to receive the. cut bars and carry them-away from the machine, and a receptacle for the cut barsinto which the conveyor delivers them. l

12. Apparatus for shearing` metal bars into vshort lengths constructed with a plurality of shearing cutting heads the blades of which are disposed transversely tothe longitudinal axis .ofthe machine, a stationary cross bed provided with slides, a plurality of sliding brackets mounted thereon, acutting blade affixed to each sliding bracket, a reciprocating cross-head provided with slides, a plurality of sliding brackets mounted thereon, a cutting blade attached to each sliding bracket, eccentrics, balance weights, levers, links and buffer springs by which the reciprocating cross head is operated substantially as described. p. y

In testimony whereof `we, have hereunto set our hands.

E. PETER JONES. A. n.JAoKsou llO nemesi Orsaddle's Ns Theextension' E'1 is at the same -le`veliand Vin alignment with the crosshead l-'when' tl'ielatter 4is inits raised position. The rack O is extended along the extension' rD1 nofY thel cross-bed D and the pinions m2 of the lower brackets M-fwillre main'in gear with the lrack and-the lbrackets will* slide on to -the extension:A

To avoid the'risk of one of the top brackets or saddles N remaining partly on themovingr cross-head Efand partlyinthe fixed extension thereof E1, a balanced intermediate sliding-section piece R is ittedonfto the fixed extension Ef'andbetween it'and the end of the cross head The intermediate section sliding piece R is mounted on; the slide fr on the end of the fixedv extension El and has awidth slightly greater than that of thetop shear bracket or saddle N;

Thus it `the bracket-or saddle N is partly upon the cross-headE and partly upon the sliding piece R'` the 'latter will move up and down with it and prevent breakage-#while thc. bracketsor saddles-'which' have moved on to theextension- El will remain at rest. An` adjustable stop r1 is-itted to the extension piece El to ensure that the piece R" and cross-head E are in alignment at theftop of the stroke.l

A chute h3 with curved or inclinedface is fitted 'to each Yof the lower brackets or saddles M` andtravels with it. Down this chute the cut lengthsof bars fall preferably on to a travelling'conveyorS placed below the ioor level and`f1om-which the cut bars may be delivered into a skip or other receptacle.

The bearing p3" of the 'shaft P `rmay be drawn along the shaftby a bar T -itte'd with a pin t with which a-bracket #engages as the shearing vheads are moved back towards the machine.

The operation of the machine is controlled by a clutch K' and pedal' Ze' so tha-tit `can either be run lcontinuouslyormakinga'oue cut at a time when desired.

The 'cut bars are delivered endways down theinclined chutes. ha on the machine on to the bend of a travelling conveyor 'S'which in turn discharges the bars' on toan inclined chute S1 which delivers themendways into a skipU. This skip Ut'which hasy no back or frontplatesbut merely consists of "two sides anda bottom is suspended from an electric traverser V controlledyby a man standing onv the `Hoor at' one side; of' the inclined chute, in `full viewofthe skip. The skip is traversed lfrom side to side 'and gradually lowered as it becomes filled "with the cut bars which enter it endways and lie horizontally; The. impact of the bars is absorbed by"means`ofa^heavy cast iron plate Y against the back wall of the trench Y1 in which the skip is suspended. After the skip is s'lulli it Yis moved. Aawaylby the traverser and another skipl got into position. The hooks V1 for"suspensionofthe skip U from the traverser V are also operated by electric power controlled by theman who operates the' traverser.

VVhatwve claim as our invention and desire to protect by Letters Patent is l.vr Apparatus for shearing metal bars into short lengths constructed with a plurality of shearing cutting heads the'blades of which are disposed transversely tothe longitudinal axis of the machine, a stationary cross bed upon which-all the lo'wcr blades are set to 'the samelevelto receive a long bar, a reciprocating cross-headto which the upper cutting blade'sarey afhxedyeach `blade in succession a-greater distance from the eorrespom'ling` lower blade to cut a long'bar into a plurality of" short lengths by successive cuts at a single stroke of the machine.

2. Apparatus tor shearingl metal bars into short lengths constructed with a plurality of shearingcutting heads the blades ol" which aredisposed Vtransversely to the longitudinal axis ot 'the machine, a vstationary cross bed provided with slides',l a plurality ofslidingbrackets'mounted thereon, a cutting blade affixed to each sliding` bracket,

a reciprocating cross-head provided with slides,a plurality ot' sliding brackets mounted-'thereom a cutting'blade attached to each sliding bracket7 means to connect" each pair ofupper and lower sliding brackets and means totraverseth'em 'in unison.l

3f Apparatus for shearing metal bars into shortflengths -constructed with a plurality o" shearing1 cutting heads the blades oi which are-disposed'transversely to the longitudinal axis Yol" the machine, a stationary crossA bed provided with slides, a plurality of'sliding brackets mounted thereon; means to move'thebrackets -to and fro, a cutting blade detached to eich sliding bracket. a reciprocating` cross-head irovided with slidesymeafns'vto move the cross-head `up and down,l a plurality of sliding brackets mounted onfthe cross-head, a cuttingA blade detached to each, each upper sliding` bracket being connected to a lower sliding bracket to traverse in unison with it.

4. Apparatus for shearing `metal bars into short lengths vconstructed with a plurality of shearing cutting heads the blades of which are disposed transversely to the longitudinal axis of the machine, a reciprocating cross head Vprovided-I with slides, eccentrics by whichthe cross-head is moved up and down,'a plurality ofsliding brackets mount ed on the cross-head, a cutting blade' attached to each bracket7 a stationary crossbed` providedwith"slides, a plurality ot' sliding brackets mountedthereon, a cutting blade attached to each, a rack aixed to the stationary cross bed, a wheel carried by lil() 

